Digital Projection Projector M-Vision 930 3D Series User Manual

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Reference Guide
FRAME RATES AND PULLDOWNS EXPLAINED
Frame Rates And Pulldowns Explained
Interlaced and progressive scan
A progressive scan is a method of updating the image by drawing all the lines of each frame in a sequence. In contrast, interlaced 
video alternately scans odd and even lines. In old analog TV interlacing was commonly used as a way of doubling the refresh rate without 
consuming extra bandwidth.
The following artifacts are common with interlaced video:
• edge tear (combing)
The...

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Reference Guide
FRAME RATES AND PULLDOWNS EXPLAINED
Pulldowns - conversion into destination formats
Pulldowns are a method of converting a 24p source into a different destination format by adding extra frames to the source.
2:3 (nor mal) pulldown
This method is used to convert a 24p source (film) into a 60i destination (NTSC video) by adding two extra fields for every four frames, 
effectively increasing the frame rate to 30 fps. The frame is split into fields and then two fields are repeated for...

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Reference Guide
FRAME RATES AND PULLDOWNS EXPLAINED
2:3:3:2 (advanced) pulldown
This method is very similar to the normal pulldown. Unlike the normal pulldown method, the resulting 30 fps video sequence contains only one 
frame containing fields from two different source frames.
The advantage of this method is that it is easier to reverse, if necessa\
ry.
Original film, 
24 fps Field 1 (odd)
Field 2 (even)Resulting video, 
30 fps
Notes
 The projector will use advanced 
pulldown on suitable video...

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Reference Guide
APPENDIX A: LENS PART NUMBERS
Appendix A: Lens Part Numbers
Throw ratiosPart numberThrow distance rangeLens extension
0.84 - 1.03 : 1 zoom lens114-3131.5 - 10 m (4.9 - 32.8 ft)98.5 mm
1.56 - 1.86 : 1 zoom lens114-3142 - 12.4 m (6.6 - 40.7 ft)15.4 mm
1.85 - 2.40 : 1 zoom lens114-3152.5 - 15.9 m (8.2 - 52.2 ft)15.4 mm
2.40 - 4.00 : 1 zoom lens114-3164 - 26.6 m (13.1 - 87.3 ft)73.5 mm
Notes
 The throw ratios given here apply 
only when the image fills the width 
of the DMD.
  For...

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Reference Guide
APPENDIX B: LENS CHARTS
Appendix B: Lens Char ts
How to use the lens charts
The lens charts on the following pages provide a quick guide to the 
type of lens needed for a particular projector.
To use the lens charts, you need the following information:
• The distance between the projector and the screen (throw 
distance)
• The maximum width of your screen
In the chart, find the point where the throw distance corresponds to 
the screen width, as shown in the example below.
Example...

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Reference Guide
APPENDIX B: LENS CHARTS
TRC values applied in the charts
Full width images 
Formats that fit the width of the DMD™ without applying a throw ratio correction (TRC) include:
• 2.35:1 (Scope) 1920 x 817 pixels       TRC = 1
• 1.85:1 (Flat)   1920 x 1037 pixels     TRC = 1
• 1.78:1 (16:9)   1920 x 1080 pixels     TRC = 1
• 1.66:1 (Vista) 1920 x 1156 pixels     TRC = 1
• 1.6:1 (16:10)   1920 x 1200 pixels (native resolution) TRC = 1
Full height images
A throw ratio correction (TRC) has...

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Reference Guide
APPENDIX B: LENS CHARTS
Full DMD™ width images
Full width images are 2.35:1 (Scope), 1.85:1 (Flat) 1.78:1 (16:9), 1.66:1 (Vista) and 1.6:1 (native).
10.84 - 1.03 : 1 zoom lens
21.56 - 1.86 : 1 zoom lens
31.85 - 2.40 : 1 zoom lens
42.40 - 4.00 : 1 zoom lens
Notes
 This chart has a TRC of 1.0, for use 
with the following images:
 For information about individual lens 
part numbers and lens extension 
sizes, see Appendix A earlier in this 
document.
For WUXGA:
2.35:1 (Scope), 1.85:1...

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Reference Guide
APPENDIX B: LENS CHARTS
1.25:1 images
10.84 - 1.03 : 1 zoom lens
21.56 - 1.86 : 1 zoom lens
31.85 - 2.40 : 1 zoom lens
42.40 - 4.00 : 1 zoom lens
Notes
 This chart has a TRC of 1.28, for 
use with the following images:
 For information about individual lens 
part numbers and lens extension 
sizes, see Appendix A earlier in this 
document.
1.25:1 (5:4)
10 m 
(32.8 ft) 20 m 
(65.6 ft) 30 m 
(98.4 ft)
5 m 
(16.4ft) 15 m 
(49.2 ft) 25 m 
(82.0 ft)
2 m (6.6 ft)
4 m (13.1 ft) 6 m (19.7...

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Reference Guide
APPENDIX B: LENS CHARTS
1.33:1 images
10.84 - 1.03 : 1 zoom lens
21.56 - 1.86 : 1 zoom lens
31.85 - 2.40 : 1 zoom lens
42.40 - 4.00 : 1 zoom lens
Notes
 This chart has a TRC of 1.2, for use 
with the following images:
 For information about individual lens 
part numbers and lens extension 
sizes, see Appendix A earlier in this 
document.
1.33:1 (4:3)
10 m 
(32.8 ft) 20 m 
(65.6 ft) 30 m 
(98.4 ft)
5 m 
(16.4ft) 15 m 
(49.2 ft) 25 m 
(82.0 ft)
2 m (6.6 ft)
4 m (13.1 ft) 6 m (19.7...

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Reference Guide
APPENDIX C: SUPPORTED SIGNAL INPUT MODES
Appendix C: Suppor ted Signal Input Modes
2D input modes
StandardResolutionVertical Frequency (Hz)Total number of linesHorizontal  Frequency (kHz)Component 1 & 2VGAHDMI 1 & 2 / HDBaseTDVI (DVI-D)
SDTV480i720 x 48059.9452515.73ü
576i720 x 57650.0062515.63ü
EDTV480p59720 x 48059.9452531.47üü
480p60720 x 48060.0052531.50üü
576p50720 x 57650.0062531.25üü
HDTV720p501280 x 72050.0075037.50üüü
720p591280 x 72059.9475044.96üü
720p601280 x...